R Dataset / Package lme4 / Dyestuff
On this Picostat.com statistics page, you will find information about the Dyestuff data set which pertains to Yield of dyestuff by batch. The Dyestuff data set is found in the lme4 R package. Try to load the Dyestuff data set in R by issuing the following command at the console data("Dyestuff"). This may load the data into a variable called Dyestuff. If R says the Dyestuff data set is not found, you can try installing the package by issuing this command install.packages("lme4") and then attempt to reload the data with library("lme4") followed by data("Dyestuff"). Perhaps strangley, if R gives you no output after entering a command, it means the command succeeded. If it succeeded you can see the data by typing Dyestuff at the command-line which should display the entire dataset.
If you need to download R, you can go to the R project website. You can download a CSV (comma separated values) version of the Dyestuff R data set. The size of this file is about 286 bytes.
Yield of dyestuff by batch
Data frames, each with 30 observations on the following 2 variables.
O.L. Davies and P.L. Goldsmith (eds), Statistical Methods in Research and Production, 4th ed., Oliver and Boyd, (1972), section 6.4
G.E.P. Box and G.C. Tiao, Bayesian Inference in Statistical Analysis, Addison-Wesley, (1973), section 5.1.2
require(lattice) str(Dyestuff) dotplot(reorder(Batch, Yield) ~ Yield, Dyestuff, ylab = "Batch", jitter.y = TRUE, aspect = 0.3, type = c("p", "a")) dotplot(reorder(Batch, Yield) ~ Yield, Dyestuff2, ylab = "Batch", jitter.y = TRUE, aspect = 0.3, type = c("p", "a")) (fm1 <- lmer(Yield ~ 1|Batch, Dyestuff)) (fm2 <- lmer(Yield ~ 1|Batch, Dyestuff2))
Dataset imported from https://www.r-project.org.
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